forked from HEL/circuiteria
73 lines
1.9 KiB
Typst
73 lines
1.9 KiB
Typst
#import "/src/cetz.typ": draw
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#import "../util.typ"
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#import "element.typ"
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#import "ports.typ": add-port
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#let draw-shape(elmt, bounds) = {
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let margin = (100% - elmt.l-ratio) / 2
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let tr2 = util.lerp(bounds.tr, margin, bounds.br)
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let br2 = util.lerp(bounds.br, margin, bounds.tr)
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let bounds2 = element.complete-bounds(elmt, (
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tl: bounds.tl,
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bl: bounds.bl,
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tr: tr2,
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br: br2,
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))
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let f = draw.line(
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bounds2.tl, bounds2.tr, bounds2.br, bounds2.bl,
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close: true,
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fill: elmt.fill,
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stroke: elmt.stroke
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)
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return (f, bounds2)
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}
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/// Draws a multiplexer
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///
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/// #examples.multiplexer
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/// For other parameters description, see #doc-ref("element.elmt")
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/// - entries (int, array): If it is an integer, it defines the number of input ports (automatically named with their binary index). If it is an array of strings, it defines the name of each input.
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/// - h-ratio (ratio): The height ratio of the right side relative to the full height
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#let multiplexer(
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entries: 2,
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l-ratio: 60%,
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..args
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) = {
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let in-ports = ()
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let ports-pos = (
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"east": auto,
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)
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if (type(entries) == int) {
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let nbits = calc.ceil(calc.log(entries, base: 2))
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for i in range(entries) {
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let bits = util.lpad(str(i, base: 2), nbits)
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in-ports.push((id: "in" + str(i), name: bits))
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}
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} else {
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for (i, port) in entries.enumerate() {
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in-ports.push((id: "in" + str(i), name: port))
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}
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}
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let n = in-ports.len()
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ports-pos.insert("west", (l, i) => {l * (i + 0.5) / n})
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element.elmt(
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cls: "multiplexer",
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draw-shape: draw-shape,
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ports: (west: in-ports, east: ((id: "out"),)),
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ports-pos: ports-pos,
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extra: (l-ratio: l-ratio),
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..args
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)
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/*
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for (i, port) in ports.enumerate() {
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let pct = (i + 0.5) * space
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add-port(id, "west", port, (id+".north-west", pct, id+".south-west"))
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}
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add-port(id, "east", (id: "out"), (id+".north-east", 50%, id+".south-east"))
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*/
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} |